Meaning & use
ultraviolet
Last updated
Relating to electromagnetic radiation with a wavelength shorter than visible light but longer than X-rays, invisible to the human eye.
See it in a sentence
Applying sunscreen helps protect the skin from harmful ultraviolet rays.
The museum used ultraviolet light to reveal a hidden signature beneath the painting's surface.
A note on using this word
Literally means 'beyond violet,' since violet is the shortest wavelength of visible light that humans can see.
Words with a similar meaning
UV
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
infrared
Another way to use it
2. noun
Ultraviolet radiation itself, as a noun.
Prolonged exposure to ultraviolet can damage skin cells over time.
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